INSECTS AND DISEASES 63 



toes, beans, cabbage, celery, etc., a sprayer of this 

 type is indispensable. Some sections of the garden 

 are of such a nature as to be much more effectively 

 treated by dusting than by liquid sprays. One of 

 the best methods of destroying the cabbage worm 

 is by dusting with pyrethrum or hellebore. Dust 

 guns can be secured for this purpose from any of 

 the large manufacturers, and in a small way can 

 often be used very advantageously. 



